Knot-tying device.



A. B. EDMANDS.

KNOT TYING DEVICE.

APPLICATION FILED MAY 1912,

Patented Sept. 29, 1914.

2 SHBETS-SHEET 1.

f I 2 La [JESEEE TOR ll L

A. B. EDMANDS.

KNOT T YING DEVICE.

APPLlCATION FILED MAY @1912. v

1,112,367, Patented Sept.29.1914.

2 SHEETS- SHEET 2 h l Tf/ESSSS. f-T 5,71

EIMAS B. EDMANDS, OF MILFORD, MASSACHUSETTS.

Specification of Letters Patent.

Patented Sept. 29, 1914.

Application filed May 5, 1913. Serial No. 765,468.

be out of? neatly, and of approximately the length, and a Weaver's knotquickly accur tely tied.

it accomplish these results by the mechanisin shown in the accompanyingdrawings, in which- Figure l is a view of my device looked at fromabove. Fig. 2 a sectional view through the plane 2-2 of Fig. 3. 3 is averti ca'i section through the plane 3-3 of Fig. 1. big. 31} the springwhich restores the trigger and hook needles to their original. positionafter the trigger has been pulled. Fig. 4. an end elevation. Fig. 5 a'side elevation showing how the mechanism is hold by the hand. Fig. (3 asection of the spring actu- "sted thread guide on plane 66 of Fig. 7;

piano 'i"? of Fig. 6. Fig. 8 a detailed drawing of a part of thecutting-off mechanism and a portion of one hook needle. Fig. i a topview of aportion of my invention, showing the hook needles, theoperation of the thread guide, the cutting oif mecham. and therespective positions of the threads just before the thread is detachedfrom'the guide. Fig. 10 a. view of the some 11%; the method by which thehook idle f holes one end of the thread 1. 11. the arrangement of thethread just before. the knot is drawn tightly, showing the method oflooping the thread. Fig. 12 shows the completed knot before tightening.

The various parts of the mechanism are indicated by the same lettersthroughout the severe views.

My invention is designed to be held cioscly in the left hand oftheoperator, and it embodies substantially, features for guidandlocating in their proper positions with reference to each other tbetwothreads to be tied; two hook needlcs operating in pianesat right anglesto each other and in 7 a sectional view of the same on the av laterperiod of the tying operation.

fixed relation to each other and to the members of the thread andadapted by manipulation of the trigger to catch and put the threads intoproper relation for the tying 69 of the knot; and two thread cutters forcutting oil the ends of the thread.

In the several figures (t represents the body or framework of a hollowbox or casing, approximately rectangular in horizontal section andhaving lateral projection as seen at the top of the drawings in Figs. 1and 2.

a is a flange, or projection from one sideof the casea, serving as aseat for the memher a to which is affixed a handlea seen best in Fig. 5,provided with slots a -ui for the reception of a strap and buckle (l -0adapted to secure the device upon the hand of the operator. The member ais ad 75 justable upon a by means of a slot (4, and the screw it". Thebend a seen in Fig. l limits the movement of a Upon the interior of thecase a, and at the interior angle formed by the lateral pro- 30 joctionabove mentioned, is the angular member 12, Fig. 2, having the support11. which carries the stud supporting the shaft b and also forms thesupport We)? the stud i supporting the shaft 0', these twoshafts b andbeing at right angles tooach other. The shaft If is supported by thestud or screw 0 at the outer end and by the similar stud at the innerend, and the shaft 6 is supported by the stud i; the shaft 9 b, isrevolubly mounted on the stud b and the pin 0, and this shaft 7) hasfixed upon it the member (Z-(Z and the member m which shaft and membersare ail integral with and operated by the trig- 3701- or, seen best inFig. The member d-d' consists substantially of a longitudi naI piece ofmetal terminating at one end in a receptacle cl for the hook needle ff,and at the opposite extremity in the piece. d which is upon oneface madea segment of a beveled gear. The shaft 0 is revo'lubly mounted by meansof the pin 1' fixed in the. member h at onelend,.und projects throughand is supported by the case a at the other end, as shown in Fig. 2.

Integral with the ,shaft c and forming a portion of it is the segmentalbeveled gear e in' mesh with the beveled qear'd, and forming also a partof the sha t e and integral therewith is the arm efhaving at itsextremity the ph' ojection 2 serving as a rehook against the upper faceof the off-set 91/,

. to its limit, and as the perforation f ceptacle or holder for theother hook needle g, the arm 6 and the arm cl being substantiallycounter-parts of each other and operating simultaneously in planes atright angles to each other by means of the beveled gears d-'e. Thetwoshafts e and b with their connected beveled gears and hook needlecarriers are operated by the trigger m of Fig. 3, which is integral withthe shaft 6 as above stated.

The gear cl is about two-fifths larger pitch diameter than the gear e sothat the needle 9 will have a somewhat longer travel than the needle f.

m is a segmental beveled gear which meshes with a similar segmental gearor, which is fixed upon the revoluble stud n, a vertical view of whichis seen in dotted lines in Fig. 4. It will thus be seen that when thetrigger m is pulled, the beveled gears e0Z' are brought into operation,each carrying its respective hook needle and at the same time thebeveled gears m a act to rotate the stud n as above stated. The triggerm and its connected parts are restored to their normal position by thecoiled spring S of Fig. 3%, this spring being fixed to the shaft b b thetongue S and having its other end 4 anchored t the frame, as seen inFig. 4.

i as, seen best in .D1 s. 1 and 9, is a stationary shear blade flxe uponthe frame of the device, and y is a. movable blade, the two serving forcutting off the thread 1 before the knot has been tied, as hereinafterset forth. The blade y is fixed upon and operated by the stud n, whichis itself operated by the beveled gears m -mf, above described.

It will be noted that the stud n which car ries the blade 3/ of theupper pair of shears is held firmly down by means of the spring 0, seenbest in Fig. 3, which spring bears Figs. 3 and 4, thus holding the bladey firmly against its opposing blade w.

w seen in Fig. 5 1s a projection from the top of the device. and carriesthe stud a and the shears a"3 and between this projection and the posts'w--w, there is a space or opening w at the bottom of which is a. grooveor channel :0 for one of the threads as seen best in Figs. 1 and 1,while :12, Figs. 1 and 11, is a similar groove for the other thread. Itwill be noted in Figs. 3 and'a, that the stud a is perforated with thehole F. This permits the hook needle f to pass cntirel through it whenthe trigger m is pulled bac c is made considerably larger than the hookneedle f, there is no interference with the o eration of .the blade 2 asthe throw or trave of y is itself veryv limited.

The end of the other thread 2 before the knot is tied isout by theshears j -p shown best in Fig/1, I) being the stationary blade and. 7"the movable blade thereof. 'This movable blade 9' is fixed upon themember j and slides within the plate which is itself fastenedto theframe of the knot-tier,.and this blade :5 is seen best in Fi 8, whichfigure also discloses its method of operation. Fixed upon the beveledgear 6' which forms part of the needle carrier c, and a little off thecenter on which said beveled gear revolves, is a pin or stud e, seenalso in Figs. 1 and 2, which pin engages the slot e in the member 3' anda partial revolution of the beveled gear e causes the member 9' with theblade 9' to travel forward sufficiently to shear off the projecting endof the thread by means of the blade 7) and j. The position of the threadjust before shearing is shown in Fig. 9 and just after pulling thetrigger is shown in Fig. 10.

The plate 70 which retains in place the member j with its connectedblade 9" is split longitudinally, as shown in Fig. 4, and the member isabove the split is bent inward so as to force it by a spring engagementclosely against the blade 9 so as to insure a clean cut.

w-w are posts rounded on their outer faces, and having a space 20between them for the passage of the hook needle and the reception of oneof the threads, and together serve as a thread holder, as seen best inFigs. 9, l0 and 11.

The member .9, Figs. 6 and 7, serves as a thread, guide, operating toinsure the proper placing of the thread for its engagement by the hookneedle. The member s is mounted so as to revolve upon the stud t, andhas a spring it to bring it back into the position from which it hasbeen moved by the tension of the thread in the proper placing of thesame before tying the knot. The backward motion of s is limited bythe'stud a.

la -a1, Figs. 1, 3 and l, is an eyelet fastened by the flat shank m tothe side of the projection co" and serves to hold the thread 1 in properrelation to the shears a2- 1 This eyelet is for the sake of clearness,omitted from Figs. 9, 1.0 and 11.

q seen best in Fi 's. 3 and 4-, is a spring clamp fastened to the bottomof stationary blade p of Figs. 1 and 2, and having its upper endprojecting .above said blade, as shown in Fig. 3. The upper end of theblade p, Fig. 4, has its corner cut away at the inner portion, adjacentto the face of q, so as to facilitate the admission of one of thethreads, as explained later. This. plate 9 is secured to p at its lowerend so that. it has a spring contact at the'up er end with thestationary blade p, thus orming a clamp serving to hold the thread 2 atproper tension as seen in Figs. 9 and 10.

Attention, is called to the. fact that the under or concave surface ofthe needle 'f is cut away, Fig. 113,- excepting at the upper end f ofthe needle. This cut sized end 7" serves a Very important function inholding the thread 1 while the loop is being formed, as will be shownhereafter.

The operation of my invention is as, follows, and can be seen best by aninspection of Figs. 9, 10, 11, and 12. held in the left hand, the handgoing through the strap (L -a the index-"or middle finger being inengagement with the trigger m, and the thumb resting upon the upperportion of the knot-tier and holding the thread 1. One end of the thread1 is (hen passed through the space to and thence Through the guide loop110 above the shears :0-g The other thread 2 is drawn by the,

riglt hand between the clamp g and the stationary blade p and thencearound the posts w w over the spring guide 8, thence through the space10 and over the thread 1, the outer portion of the thread 2 being heldin the right hand; the thread 2 is then drawn somewhat tightly by therighthand, forcing forward the spring guide .9 until the thread 2 slipsoff and 8 assumes its original position, as shown in Fig. 9 leaving thethread lying close to and around the base of the posts w-w. When thisposition is.

reached, the trigger m is pulled by the middle finger of the needlesf-'g are thus brought forward, 9 crossing over the outer or loose end ofthe thread 2, Fig. .10, and under the thread 1, and also under thatportion of 2 1 ing between the posts 'w-w and the 0 amp 9. The pullingof the trigger on cuts off the thread 1 by the shears 40-3 also thethread 2 by the shear jp.

'lhe relative position of the threads just before the trigger isreleased is shown in Figs. 10 and 11%. The needle f-f as it comesforward forces by reason of the shape of the head 7 the thread 1 to oneside, as shown in Fig. 10 and as the needle point I" advances it passesover the thread 1 as indicated by the dotted lines in Fig. 1.0. As soonas the threads have been out off by the shears as above stated, thetrigger is released and the needles gg and f-f return to their originalposition by means of the spring-s As it is important that the mainportion of the thread 1 should not be disturbed by the return of theneedle f-f' outer end of l is caught by the have provided a clearancefor the, main portion of the thread by cutting away he un der portion ofthe needle f--f, as shown in Figs. and 11%. As the needle gjyf returnstoward its original position it catches on its return path, first, thatportion f the thread 2 which lies directly between the until the asshown in Fig. 3 and also in away space and full The device is I lefthand, the two'hookv hook f, I

said trigger shaft;

clamp qand the posts ww, and-draws it backward in a loop as shown inFig. 11. At the same time the needle f-f in its return catches with itshook the end of the thread 1 adjacent brings it backover the outer endof the thrmd 2 which is held by the right hand of the operator, therelative positions of the" thread then being as shown in Fig. 11. Fig;the thread 1 lying immediately below the shearswy is almostperpendicular so that the side barb of the needle ff readily grasps itand draws it backward into "the position shown in Fig. 11. It will alsobe seen in Fig. 111} that the head or extremity ofthe needle f being offull size, serves to hold securely the end looped thread 1 as the needlef-f returns to its original position, so that the thread 1 is clamped bythe head f of the needle ff until the thread 2 is ulled from the postsw-'w in the final tig toning of the knot.

The threads being in therelative' position shown in Fig. 11, a slightpull of the right hand upon the thread 2 slides the loop of the thread2off from the posts w w and leaves the ends in the relative positionsshown in Fig. 12, the knotbeing then completed by pulling the thread 2tighter by means of the right hand of the operator, the thread 1 beingretained'by the thumb of the left hand.

Having now described my invention, which I'claim and desire to secure byLetters Patent is: I

1. In a knot-tyin device, a. containing frame work; a trigger shaftrevolubly mounted therein; a second shaft also revolubly mounted thereinat right angles to said trigger shaft; two needle-carrying arms, the one'integral with said trigger shaft, the other integral with said secondshaft and operating in planes atright angles to each other; two hookneedles fixed one upon each of said arms; a. reciprocatin trigger fixedupon said trigger shaft; beve gears fixed one upon the inner end of eachof said needle-carrying .arms and in mesh with each other; a spring.operating to return said trigger and said needle arms and needles totheir normal position when said trigger is released; and means forarranging the threads in such a position with reference to each otherand to said needles that said threads will be drawn by engagement withsaid needles into a weavers knot.

2. In a knot-tying device, a containing frame work; a. trigger shaftrevolubly mounted therein; a second shaft also revolubly mounted thereinat right angles to two needle-carrying arms, the one integral with saidtrigger shaft, the other integral with said second shaft and operatingin planes at right angles to the shears az-y and 70 11% also shows thatthat portion of said needle-carrying arms a1 1 in mesh with each other;a spring operating to return said l trigger and said needle arms andneedles to their normal position when said trigger is released; guidesfor placing the threads in proper relatioi'i to each other for the for--mation of a wearers knot by the engagement therewith of said needles,and sepa-- rate shears mounted upon said containing frame wort: andoperated by said trigger, and serring to out said threads to a, properlengtl'i.

3 In a. knot-tying deriee, a coi'itaining frame work; a trigger shaftrerolnhl} mounted therein; a second. shaft also rev olnhl monntedtherein at right angles to said trigger shaft; two needle-carrying arms,the one integral with said trigger shaft, the other integral. with said.second shaft and operating in planes at right angles to each other; twohook needles fixed one upon each of said arms; a reciprocating triggerfixed upon said trigger shaft; bevel gears, one upon the inner end ofeach of said needle-carrying arms and in mesh with each other; a sprinoperating tr return said trigger and said needle arms and needles totheir normal position when said trigger is released; two posts adaptedto form a loop in one thread and having a space hetween them. for thereception of .the second thread; a thread guide operating to place said0nd thread. in proper relation to said first hread for the formation ofa weavers knot and an eyelet serving to hold said first thread inposition.

-l-. A knot-tying device comprising a frame, two hook needlesrevolnlzl'y nn'nnited therein and moving in planes at right angles toeach other, one of said needles moving in the are of a circle and beingof lnll size at its free end and haring a portion of its concared snr'laee out awa r to form a clearance for the thread to he en gaged hr saidneedle and its 'l'ree end heing adapted to hold said thread 'lormaintaining proper relations to a second thread For the formation. oil awearers knot, journaling means for said needles positionrd transverselyof and PLl'Pl'lllllLllllll' to eaeh other and means for operating saidneedles.

5. in a li'riott ing derire two rerohihly mounted hook needles adapted'lor more ment in planes at right angles to each Olllel, one of saidneedles being of full size at its free end and haring a portion of itscon cared surface out anay to form a clearance for the thread to heengaged hr said needle and the free end of said needle adapted to holdsaid thread for maintaining the proper relations to a second thread forthe lornnr tion of a weavers knot, journaling means .l'or said needlesone of said join-nailing means being positioned transversely through theother jonrnaling n'ieans.

In testimon wherec-t l. a llix my signature in presence of twowitnesses.

ARTEHAS B. EDVAN

